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Aviation History
1951
1951 - 2359.PDF
18 FLIGHT 30 NOVEMBER I9J UNITED UN,,ED AIRCRAFT EXPORT PRATT & WHITNEY J-4.2 AUTHORIZED 1.000 HOURS BETWEEN OVERHAULS —The Pratt & Whitney J-42 Turbo-Wasp has recently become the first U.S. jet aircraft engine to reach an officially authorized service life of 1,000 hours between major overhauls. The 1,000 hour overhaul interval was authorized by the U.S. Navy's Bureau of Aeronautics as a result of the exceptional service record of J-42 Turbo-Wasps which power carrier and land based squadrons of Grumman F9F-2 Panthers, flown by Navy and Marine pilots in Korea. In addition to reducing the number of overhauls, exceptional durability of J-A2a has enabled the Navy to cut substantially its orders for spare engines and parts. During the past year J-42 Turbo-Wasps logged morethan 100,000 hours in the air in propelling Panther jet fighters a total of 50 million miles. Of thistotal, more than 20,000 hours and 10 million miles were in combat over Korea. In two years of active flying duty J-42 engines haveflown more than 150,000 hours without a single turbine blade failure, and during the same time the overhaul period has risen from 150 to the present 1,000 hours. The J-4-2 has performed successfully under the most rugged combat conditions since the second month of the Korean war, including catapult launching of Panthers with maximum loads of bombs and rocketsj flying in heavy icing conditions; and resist- ing the corrosive action of heavy salt spray at sea and choking dust when operat- ing from rough, advance airfields on land. Turbo-Wasp- powered Panthers have performed equally well as high- ._._. - r - - altitude fighters or low-level attack planes. ''-z.T_'.:z~-: Evidence t>f the J-42's reliability under combat con- ditions has been its durability in face of major battle damage. Some pilots have even reported that these engines have "swallowed" rocks, three-inch tree trunks, enemy fire and varied debris without ser- ious damage or loss of efficiency to engine output. NEW MACHINES. METHODS SPEED PRATT & WHITNEY JET ENGINE PRODUCTION — A program to speed production, increase worker efficiency and improve the quality of finished parts at Pratt & Whitney Aircraft has stimulated the development of several wholly new machine tools and the establishment of major improvements in metal working techniques, it was announced recently. The machines and methods will mean faster and more economical output of new high-powered axial-flow jet engines now being readied for quantity production. The new machines were worked out by Pratt & Whitney in collaboration with severalmachinery manufacturers. They possess a high degree of flexibility, currently
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